Ancient Frozen Microbes Return To Life

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The DNA of ancient microorganisms frozen in glaciers has the ability to return to life as the glaciers melt. A paper published online this week in the Proceedings of the National Academy of Science by scientists who melted five samples of ice ranging in age from 100,000 to 8 million years old found many microorganisms trapped inside. The younger ice contained more lifeforms, which grew fast when cultured, doubling every couple of days. By contrast, the microorganisms from the oldest ice samples grew slowly, doubling only every 70 days. The researchers calculated a DNA half-life of 1.1 million years in Antarctic ice, and warned that as warming melts the glaciers, the revived DNA could fuel a new wave of bacterial evolution. . . Blimey. Will nature’s cryogenesis be the end of us? JULIA WHITTY

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Fact:

In-depth journalism that investigates the powerful takes real money and is so damn important right now.But it doesn’t take a Mother Jones investigation to know that billionaires and corporations will never fund the type of reporting (like they do politicians) we do that exists to help bring about change. Instead, our mission-driven journalism is made possible by people power, and has been for 46 years now since our founding as a non-profit.

In “TITLE TK” Monica Bauerlein writes about the perilous moment we’re in, and why it’s so important that we raise $325,000 by the time November’s midterms are decided so we can be ready to throw everything we have at the big issues facing the nation no matter what happens. Please help MoJo’s people-powered journalism with a donation today.

$400,000 to go!

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